Theoretical Aspects of Conducting Polymers: Electronic Structure and Defect States |
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Page 78
... impurity states appear in the gap ( Bryant and Glick 1982 ) . Let us discuss the case of diagonal randomness by ... impurity at n = 0 produces a donor state for Vo < 0 and an acceptor state for V > 0 with a level at ε = - O A sinn where ...
... impurity states appear in the gap ( Bryant and Glick 1982 ) . Let us discuss the case of diagonal randomness by ... impurity at n = 0 produces a donor state for Vo < 0 and an acceptor state for V > 0 with a level at ε = - O A sinn where ...
Page 79
... impurity potential is given by V ( x ) = ya ! [ dx Σ 8 ( x - x ) ( 1 + 02 ) + Φ % s · ( 89 ) S S ( 90 ) As before ... impurity concentration the acceptor level develops into a structured impurity band with an additional peak from ...
... impurity potential is given by V ( x ) = ya ! [ dx Σ 8 ( x - x ) ( 1 + 02 ) + Φ % s · ( 89 ) S S ( 90 ) As before ... impurity concentration the acceptor level develops into a structured impurity band with an additional peak from ...
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... impurity concentrations ni The energies marked by • 1 to 3 correspond to levels associated with an isolated impurity ( 1 ) , two close impurities ( 2 ) , three close impurities ( 3 ) . Fig.13 Fermi energy EF centration ni as a function ...
... impurity concentrations ni The energies marked by • 1 to 3 correspond to levels associated with an isolated impurity ( 1 ) , two close impurities ( 2 ) , three close impurities ( 3 ) . Fig.13 Fermi energy EF centration ni as a function ...
Common terms and phrases
A.J. Heeger absorption amplitude approximation associated assume Baeriswyl band becomes Bishop bond alternation bond length bond order boundary calculations Campbell chain changes charge conducting configuration consider constant continuum limit correlation corresponds coupling defect density depend described determined dimerization discrete discuss disorder distortion dynamical effects electronic energy equation et al expected experiments extent field fluctuations force function given gives ground Hamiltonian hand Hückel impurity increasing integral interaction interchain coupling involved kink lattice leads Lett levels limit MacDiarmid Mele modes Notice observed obtained optical parameter particular Peierls phase phonon Phys Physics points polaron polyacetylene polymers potential presented produced properties proposed represents respect Rice Schrieffer self-consistency shown single Solid soliton solution strongly structure temperature theory whereas yields